....2

• parts of woods

  A) heartwood

  B) cork cambium

  C) growth ring\

  D) outer bark

  E) ray

  F) early wood

  G) pith

  H) late wood

  I) sap wood

  J) vascular cambium

  K) secondary ploem

  L) inner bark\

  
• Bastard sawing- cutting the logs entirely through the diameter a parallel cord tangential to the annual rings.
• Rift Sawing - divided into four methods; radial methods, tangential method, quarter tangential, and combined radial and tangential.
• Natural or Air Seasoning- considered as one of the best methods in seasoning lumber although the period involved is longer than the artificial method.
• Artificial Seasoning- method adopted for quick drying of the wood such as forced air drying, kiln drying and radio frequency dielectric drying.
• Veneer and plywood- are made of 3, 4, 7 or more veneer slice that are laid upon the other.